红外线遥控系统_外文翻译.doc

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红外线遥控系统_外文翻译,摘要目前在世界范围内被广泛使用的一种无线连接技术是红外线数据通信技术,其得到许多的软硬件平台支持。红外收发器产品的特点有成本低,尺寸小,数据传输速度快,点对点ssl安全传输,防电磁干扰等,能够实现不同产品间快速、方便、安全地进行信息交换和传送,在近距离无线传输方面有着相当明显的优势。红外遥控收发...
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红外线遥控系统_外文翻译

摘要

目前在世界范围内被广泛使用的一种无线连接技术是红外线数据通信技术,其得到许多的软硬件平台支持。红外收发器产品的特点有成本低,尺寸小,数据传输速度快,点对点SSL安全传输,防电磁干扰等,能够实现不同产品间快速、方便、安全地进行信息交换和传送,在近距离无线传输方面有着相当明显的优势。红外遥控收发系统具有很强的实用意义,目前红外收发器产品在便携式产品中有着很大的应用潜力。随着红外数据传输技术更加成熟、成本下降,红外收发器在短距离通讯领域必将得到更广泛的应用。
   
设计本系统的目的是,用红外线作为传输载体来携带用户的操作信息并由接收电路接受并解调出原始操作信号,主要使用编码芯片和解码芯片对信号进行调制和解调。其中编码芯片使用的是PT2262,解码芯片使用是PT2272,他们都由台湾生产。其主要工作机理是:我们使用编码键盘为PT2262输入信息,输入的信息被PT2262编码并加载到38KHZ的载波上,并调制红外发射二极管,辐射到空间。然后,接收系统接收到发射的信号并解调出原始信息。原始信号由PT2272进行解码,以此驱动对应的电路完成用户的操作请求。

关键字:红外线;编码;译码;LM386;红外收发器。


Abstract

Red outside data correspondence the technique be currently within the scope of world drive extensive usage of a kind of wireless conjunction technique, drive numerous hardware and software platform support. Red outside the transceiver product have cost low, small scaled turn, the baud rate be quick, point to point SSL, be free from electromagnetism thousand Raos etc. characteristics, can realization information at dissimilarity of the product fast, convenience, safely exchange and transmission, at short distance wireless deliver aspect to own very obvious of advantage .Along with red outside the data deliver a technique more and more mature, the cost descend, red outside the transceiver necessarily will get at the short distance communication realm more extensive of application.
  
The purpose that design this system is transmit customer’s operation information with infrared rays for transmit media, then demodulate original signal with receive circuit. It use coding chip to modulate signal and use decoding chip to demodulate signal. The coding chip is PT2262 and decoding chip is PT2272. Both chips are made in Taiwan. Main work principle is that we provide to input the information for the PT2262 with coding keyboard. The input information was coded by PT2262 and loading to high frequent load wave whose frequent is 38 kHz, then modulate infrared transmit dioxide and radiate space outside when it attian enough power. The receive circuit receive the signal and demodulate original information. The original signal was decoded by PT2272, so as to drive some circuit to accomplish customer’s operation demand.

Keywords: Infrared dray;Code;Decoding;LM386;Red outside transceiver